/Engine/Source/Runtime/Slate/Public/Framework/Application/SlateApplication.h
virtual bool OnMotionDetected ( const FVector & Tilt, const FVector & RotationRate, const FVector & Gravity, const FVector & Acceleration, [FPlatformUserId](API\Runtime\Core\Misc\FPlatformUserId) PlatformUserId, [FInputDeviceId](API\Runtime\Core\Misc\FInputDeviceId) InputDeviceId )